# Number Line, by MLC vs Owlet

The clearest difference is rating: Number Line, by MLC at 4.4 against Owlet's 1.0. Number Line, by MLC also leads on ratings volume (15 vs 1). Owlet's advantage is update cadence (every 6 months vs every 13 months) and iOS requirement (12.0 vs 16.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Number Line, by MLC holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Number Line, by MLC has 15 ratings behind it against 1, so its average is the more settled of the two.

Number Line, by MLC ships an update every 13 months, Owlet every 6 months. The most recent releases landed on October 9, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Number Line, by MLC | Owlet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (15 ratings)](https://appshunter.io/ios/app/number-line-by-mlc/id751816884/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/owlet-cube3/id1533414683/reviews) |
| Number of ratings | **15** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 7 MB | 123 MB |
| Requires iOS | 16.1 | **12.0** |
| Devices | iPad | **iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [The Math Learning Center](https://appshunter.io/developer/1542700905) | [BirdBrain Technologies LLC](https://appshunter.io/developer/1012525349) |

## What reviewers say

### Number Line, by MLC

[App page](https://appshunter.io/ios/app/number-line-by-mlc/id751816884)

This app allows students to visualize number sequences and demonstrate mathematical strategies. It supports various number types and offers tools for annotation, problem-solving, and sharing work. Ideal for elementary classrooms and iPad learning environments.

**Highlights:** Visualize number sequences, Demonstrate counting, adding, subtracting, multiplying, dividing, Use whole numbers, fractions, decimals, or negative numbers, Add custom tick marks and labels, Hide and reveal numbers and jumps, Annotation and drawing tools, Save and share work

**Features:** macOS Compatibility

**In-app purchases:** none


### Owlet

[App page](https://appshunter.io/ios/app/owlet-cube3/id1533414683)

This app uses a physical manipulative to teach place value concepts. It offers five distinct modes covering tens, hundreds, money, hundredths, and thousandths, with interactive activities for exploration, creation, and problem-solving.

**Highlights:** Place value learning, Tens, Hundreds, Money modes, Hundredths and Thousandths modes, Explore, Make, Build activities, Compare and Round functions, Interactive number puzzles

**In-app purchases:** none


## Frequently asked questions

### Is Number Line, by MLC free?

Number Line, by MLC is free to download, with no in-app purchases.

### Is Owlet free?

Owlet is free to download, with no in-app purchases.

### Which has better reviews, Number Line, by MLC or Owlet?

Number Line, by MLC is rated higher. Number Line, by MLC averages 4.4 out of 5 from 15 ratings, while Owlet averages 1.0 from 1 ratings.

### Do Number Line, by MLC or Owlet have ads?

Neither Number Line, by MLC nor Owlet shows ads.

### Which is updated more often, Number Line, by MLC or Owlet?

Number Line, by MLC ships an update every 13 months, and Owlet every 6 months. Most recently, Number Line, by MLC was updated on October 9, 2026 and Owlet on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*